UI Components / Collapsible Panel
In your Backendless App, go to the Marketplace -> User Interface tab and install the Collapsible Panel componentInstall the component to the UI Container of your choice

Collapsible Panel

Collapsible Panel is the component that can be used in Backendless UI-Builder.
It displays summary information and upon selecting the panel,
it expands to display the full expansion panel.

UI Components / Collapsible Panel